135256111 has 2 divisors, whose sum is σ = 135256112. Its totient is φ = 135256110.

The previous prime is 135256109. The next prime is 135256129. The reversal of 135256111 is 111652531.

It is a happy number.

135256111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135256111 - 2¹ = 135256109 is a prime.

Together with 135256109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135256211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67628055 + 67628056.

It is an arithmetic number, because the mean of its divisors is an integer number (67628056).

Almost surely, 2^135256111 is an apocalyptic number.

135256111 is a deficient number, since it is larger than the sum of its proper divisors (1).

135256111 is an equidigital number, since it uses as much as digits as its factorization.

135256111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 25.

The square root of 135256111 is about 11629.9660790563. The cubic root of 135256111 is about 513.3169817790.

The spelling of 135256111 in words is "one hundred thirty-five million, two hundred fifty-six thousand, one hundred eleven".